Stretchable, controlled release of active substances, and biodegradable chitosan-polyvinyl alcohol hydrogel film for antibacterial and chilled meat preservation

文献类型： 外文期刊

第一作者： Wang, Debao

作者： Wang, Debao;Zhu, Chaoqiao;Yang, Qingfeng;Xu, Yuqian;Zhang, Dequan;Hou, Chengli;Wang, Debao;Wang, Daoying;Liu, Fang

作者机构：

关键词： Chitosan; Hydrogel film; Controlled release; Biodegradable; Preservation

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 477 卷

页码：

收录情况： SCI

摘要： In this study, we utilized chitosan (CS) and polyvinyl alcohol (PVA) as the hydrogel matrix to fabricate a multifunctional hydrogel packaging film through the dimethylsulfoxide/hydroxybenzotriazole activation system-mediated. Based on the evaluation of thermal stability and mechanical properties, the optimal polymerization ratio of PVA to CS was determined as 3:1. Hydrogels made of 6 % PVA and 2 % CS have excellent heat resistance and adhesion, with a remarkable breakage elongation of 754.3 %. The cross-linking of PVA, CS, and e-PL polymers occurred through esterification and amide reactions involving-COOH,-OH, and-NH2. The incorporation of e-PL improved the thermal stability and strain properties. In vitro antibacterial assays demonstrated that the PVA/CS@e-PL exhibited remarkable antibacterial efficacy against Staphylococcus aureus and Pseudomonas fluorescein. The PVA/CS@e-PL-0.144 showed controlled release of e-PL for over 3 d and extended the shelf life of chilled chicken to 8 d. These findings suggest that PVA/CS@e-PL-0.144 is a potential antibacterial packaging.

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